/* USER CODE BEGIN Header */
/**
 ******************************************************************************
 * @file           : main.c
 * @brief          : Main program body
 ******************************************************************************
 * @attention
 *
 * Copyright (c) 2025 STMicroelectronics.
 * All rights reserved.
 *
 * This software is licensed under terms that can be found in the LICENSE file
 * in the root directory of this software component.
 * If no LICENSE file comes with this software, it is provided AS-IS.
 *
 ******************************************************************************
 */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "adc.h"
#include "dma.h"
#include "fatfs.h"
#include "rng.h"
#include "sdio.h"
#include "usart.h"
#include "usb_device.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */

/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */

/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/

/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
// https://blog.csdn.net/u012902367/article/details/125883326
// https://blog.csdn.net/qq_49053936/article/details/145316195
uint8_t readBuf[512];
uint8_t writeBuf[512];
BYTE work[_MAX_SS];
char *fileName = "test.txt";
uint32_t writeLen;
uint32_t readLen;
//将USB-P拉低，再拉高，以模拟重新拔插的过程
//注意，此函数需要放在USB初始化函数的前面，否则不会生效
void LL_usb_reload(void)  
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};

  GPIO_InitStruct.Pin = GPIO_PIN_12;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_PULLDOWN;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

  HAL_GPIO_WritePin(GPIOA,GPIO_PIN_12,GPIO_PIN_RESET);
  HAL_Delay(500);    
  HAL_GPIO_WritePin(GPIOA,GPIO_PIN_12,GPIO_PIN_SET);
  HAL_Delay(500);    
}

/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{

  /* USER CODE BEGIN 1 */

  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_DMA_Init();
  MX_USART1_UART_Init();
  MX_RNG_Init();
  MX_ADC1_Init();
  MX_SDIO_SD_Init();
  MX_FATFS_Init();
  MX_USB_DEVICE_Init();
  /* USER CODE BEGIN 2 */
  //LL_usb_reload();
  // 挂载
  retSD = f_mount(&SDFatFS, SDPath, 1);
  switch (retSD) {
  case FR_NO_FILESYSTEM: // FM_FAT32
  {
    retSD = f_mkfs(SDPath, FM_FAT32, 512, work, sizeof(work));
    if (retSD != FR_OK) {
      while (1)
        ;
    }
  } break;
  case FR_OK:
    break;
  default:
    while (1)
      ;
  }

  // �?
  retSD = f_open(&SDFile, fileName, FA_CREATE_ALWAYS | FA_WRITE);
  if (retSD != FR_OK) {
    while (1)
      ;
  }

  sprintf((char *)writeBuf, "%s", "abc123今天天气还可以\r\n");
  retSD = f_write(&SDFile, writeBuf, strlen((const char *)writeBuf), &writeLen);
  if (retSD != FR_OK) {
    while (1)
      ;
  }
  f_close(&SDFile);

  // �?
  retSD = f_open(&SDFile, fileName, FA_OPEN_EXISTING | FA_READ);
  if (retSD != FR_OK) {
    while (1)
      ;
  }

  retSD = f_read(&SDFile, readBuf, 50, &readLen);
  if (retSD != FR_OK) {
    while (1)
      ;
  }
  f_close(&SDFile);

  // 卸载
  f_mount(NULL, SDPath, 1);
   

  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1) {
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}

/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /** Configure the main internal regulator output voltage
  */
  __HAL_RCC_PWR_CLK_ENABLE();
  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLM = 4;
  RCC_OscInitStruct.PLL.PLLN = 168;
  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
  RCC_OscInitStruct.PLL.PLLQ = 7;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }

  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV4;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK)
  {
    Error_Handler();
  }
}

/* USER CODE BEGIN 4 */

/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  __disable_irq();
  while (1) {
  }
  /* USER CODE END Error_Handler_Debug */
}

#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t *file, uint32_t line)
{
  /* USER CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line
     number, ex: printf("Wrong parameters value: file %s on line %d\r\n", file,
     line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
